Adding a certain compound to certain chemical reactions, such as: 210532-25-5, name is 3,5-Difluorobenzene-1-sulfonyl chloride, belongs to chlorides-buliding-blocks compound, can increase the reaction rate and produce products with better performance than those obtained under traditional synthetic methods. Here is a downstream synthesis route of the compound 210532-25-5, SDS of cas: 210532-25-5
Example 16 2-(4-(8-Bromo-3-(3,5-difluorophenylsulfonyl)-2-oxo-2,3-dihydro-1H-imidazo[4,5-c]quinolin-1-yl)phenyl)-2-methylpropanenitrile To a solution of 2-(4-(8-bromo-2-oxo-2,3-dihydro-1H-imidazo[4,5-c]quinolin-1-yl)phenyl)-2-methylpropanenitrile (Intermediate 1, 50 mg, 0.12 mmol) and triethylamine (24.4 mg, 0.24 mmol) in dichloromethane (6 ml) was added 3,5-difluorobenzene-1-sulfonyl chloride (38.26 mg, 0.18 mmol) at 0 C. The reaction was stirred at RT for 3 hours. The reaction mixture was poured into cold water and organic layer was separated. The aqueous layer was extracted with dichloromethane. The combined organic layer was washed with brine dried over sodium sulfate and evaporated to dryness. The crude product was purified by column chromatography (silica gel, 2% acetone in chloroform) to obtain the title compound. Yield: 25 mg (35%); 1H NMR (CDCl3, 300 MHz): delta 9.553 (s, 1H), 8.002-8.032 (d, 1H, J=9 Hz), 7.752-7.798 (m, 4H), 7.664-7.701 (dd, 1H, J=8.7, 2.1 Hz), 7.466-7.495 (d, 2H, J=8.7 Hz), 7.175 (m, 1H), 7.002-7.009 (d, 1H, J=2.1 Hz), 1.831 (s, 6H); MS: m/z 583 (M+).
At the same time, in my other blogs, there are other synthetic methods of this type of compound, 3,5-Difluorobenzene-1-sulfonyl chloride, and friends who are interested can also refer to it.
Reference:
Patent; Kumar, Sanjay; Vishwakarma, Ram; Mundada, Ramswaroop; Deore, Vijaykumar; Kumar, Pramod; Sharma, Somesh; US2012/108627; (2012); A1;,
Chloride – Wikipedia,
Chlorides – an overview | ScienceDirect Topics